Yellow Floating-Heart

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Presentation by MDC biologist on the invasive plant species Yellow Floating-Heart.

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Yellow Floating-Heart

  1. 1. Yellow Floating-Heart Nymphoides peltata Darren R. Thornhill Fisheries Management Biologist MO Dept. of Conservation 3500 S Baltimore St. Kirksville, MO 63501
  2. 2. What does it look like?• Round to heart-shaped leaves (3-12 cm diameter) – Undersides are often purple• Two to five yellow flowers (2-4 cm diameter) – Fringed petals (5) above water surface – Flowers May to October
  3. 3. Ecology• Reproduces by seed and fragmentation• Prefers slow moving water and/or damp mud• Found in depths ranging from 0 to 4 meters• Develops dense, monotypic mats
  4. 4. How did it get here?• Native of eastern Asia and the Mediterranean• Sold and cultivated in New England as a water garden plant in 1890’s• First noted in western states in 1930 (Long Lake, Washington)• Commonly cultivated and sold for ornamental use in ponds
  5. 5. How do we get rid of it?• Prevention is paramount!• Biological control is unknown• Mechanical control is not recommended• Chemical control is preferred – Dichlobenil (effective, but not labeled for aquatic) – Glophosate (requires multiple treatments) – Imazapyr (requires multiple treatments)

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